Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21430206p&link_type=abstract
American Astronomical Society, AAS Meeting #214, #302.06; Bulletin of the American Astronomical Society, Vol. 41, p.719
Astronomy and Astrophysics
Astrophysics
Scientific paper
The recently launched Fermi Gamma-ray Space Telescope promises a decade of excitement and discovery in the GeV band. While Fermi represents a dramatic improvement in instrumental capabilities for point source observations in GeV gammas compared to its predecessors, much of GeV science will still be encoded in the unresolved, diffuse background, due to restrictions in point source sensitivity and angular resolution inherent in GeV energies. I will discuss the two guaranteed astrophysical contributions to the isotropic diffuse gamma-ray background (starforming galaxies and gamma-ray- loud AGN), and our efforts to disentangle unresolved diffuse emission from different source classes and
circumvent the difficulties presented by astrophysical backgrounds to hopefully uncover a dark matter annihilation signal which may be hiding among the diffuse GeV photons.
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